Novel detachable axial mechanical property testing device for combined disc spring

Abstract

The utility model relates to a novel detachable axial mechanical property testing device for a combined disc spring. The device is mainly composed of an upper seat plate, a spoke type force sensor, a force transmission lead screw, a pre-tightening bolt, a force transmission flange, a constraint steel rod, a displacement sensor and a lower seat plate. The combined disc spring axial mechanical testing device overcomes the defects that a conventional combined disc spring axial mechanical testing device is difficult to keep a disc spring combined state in the testing process and is low in testing efficiency, has the advantages of being simple in structure, clear in stress and easy to disassemble, is provided with a pre-tightening bolt, can be used for testing combined disc springs under different pre-pressures, and is high in testing efficiency. The upper seat plate and the lower seat plate are designed to be flange plates, a hydraulic jack is convenient to install, and the device can be widely applied to the field of combined disc spring axial mechanical property testing.

Description

Technical Field

[0001] The utility model relates to the field of mechanical property testing of structural components, and specifically refers to a new detachable axial mechanical property testing device for a combined disc spring. Background Art

[0002] The disc spring has a conical disc shape and is characterized by a short active stroke. It can be used individually or in combination by connecting multiple pieces in series or parallel to meet different usage requirements, and a combined disc spring with different stiffness and displacement characteristics can be formed. However, the mechanical properties of the disc spring are greatly affected by materials, processing techniques, and heat treatment methods, and performance testing is required before engineering applications.

[0003] Existing axial mechanical testing devices for combined disc springs usually can only test one group of disc springs at a time, and it is difficult to control the combined form of the disc springs during the testing process, resulting in easy slippage at the edges of the disc springs during series combination, which affects the test results. Therefore, it is very necessary to design an axial mechanical property testing device that can maintain the combined form of the disc springs during testing, is simple and efficient in operation, and can be flexibly adjusted according to the combination method of the disc springs. Summary of the Invention

[0004] In view of the above problems, the utility model relates to a new detachable axial mechanical property testing device for a combined disc spring. The device mainly consists of an upper seat plate, a spoke-type force sensor, a force transmission lead screw, a pre-tightening bolt, a force transmission flange, a constraint steel rod, a displacement sensor, a lower seat plate, and connecting components. A round hole is opened in the center of the force transmission flange, and an adjusting bolt is installed on the lower seat plate. The upper seat plate is connected to the spoke-type force sensor, and the lower seat plate is connected to the lower thread of the constraint steel rod. The spoke-type force sensor and the force transmission flange are connected together using the force transmission lead screw and bolts to form a force transmission structure. The combined disc spring to be tested is inserted into the constraint steel rod, and the constraint steel rod passes through the central round hole of the force transmission flange and then through another group of combined disc springs to be tested. A pre-tightening bolt is installed on the constraint steel rod on the other side of the combined disc spring to be tested on the force transmission flange to apply a pre-pressure to the combined disc spring to be tested. The upper end of the measuring frame is connected to the spoke-type force sensor, and the displacement sensor is clamped on the lower side and abuts against the adjusting bolt on the lower seat plate to form a new detachable axial mechanical property testing device for the combined disc spring.

[0005] During testing, the lower seat plate is fixed, and a force is applied to the upper seat plate through a hydraulic jack. The spoke-type force sensor and the displacement sensor are respectively connected to a computer acquisition system to collect the axial mechanical property data of the combined disc spring.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] 1. A round hole is opened at the central position of the force transmission flange, and a chamfer is provided on each of the upper and lower surfaces of the round hole and the flange to make the force transmission position of the round hole fit tightly with the combined disc spring.

[0008] 2. Connect the upper seat plate to the spoke - type force sensor, and connect the spoke - type force sensor to the force - transmitting flange using a force - transmitting lead screw and bolts.

[0009] 3. Drill and tap bolt holes at the central position and the circumference of the lower seat plate, and connect the restraining steel rod at the central position of the lower seat plate.

[0010] 4. Insert the combination disc spring to be measured into the restraining steel rod. The restraining steel rod passes through the central round hole of the force - transmitting flange, so that the upper edge of the combination disc spring to be measured is in close contact with the chamfered part of the central round hole of the force - transmitting flange.

[0011] 5. Insert another set of combination disc springs to be measured on the restraining steel rod on the other side of the combination disc spring to be measured on the force - transmitting flange, and install a pre - tightening bolt at the threaded part of the restraining steel rod. Use a torque wrench to tighten the pre - tightening bolt to the designed torque to apply a pre - pressure to the combination disc springs to be measured on both sides of the force - transmitting flange.

[0012] 6. Fix the lower seat plate, connect the upper seat plate to the hydraulic jack, and install a measuring frame and a displacement sensor to test the axial mechanical property data of the combination disc spring to be measured.

[0013] The main advantages of the present utility model are as follows.

[0014] 1. The structure of the present utility model is simple, the force - bearing is clear, and the connections are all made using flanges and bolts, which are easy to disassemble.

[0015] 2. The present utility model is equipped with a pre - tightening bolt, and the combination disc springs under different pre - pressures can all be tested using this device.

[0016] 3. The present utility model can test the performance of two groups of combination disc springs simultaneously, improving the test efficiency.

[0017] 4. The upper seat plate and the lower seat plate of the present utility model are designed as flange plates, which are convenient for connecting to the hydraulic jack.

[0018] 5. When testing, the present utility model can maintain the combined form of the disc spring, effectively preventing the edge slip of the series - connected combined disc spring and improving the test accuracy.

[0019] 6. Each component of the present utility model is independent, and the relevant components can be replaced separately according to the test requirements, which is widely suitable for the field of axial mechanical property testing of combination disc springs. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of a new detachable axial mechanical property testing device for combination disc springs.

[0021] Figure 2 It is an assembly schematic diagram of a new detachable axial mechanical property testing device for combination disc springs.

[0022] Figure 3 It is a sectional view of the initial state of a new detachable axial mechanical property testing device for combined disc springs.

[0023] Figure 4 It is a sectional view of the tensile state of a new detachable axial mechanical property testing device for combined disc springs.

[0024] Figure 5 It is a sectional view of the compression state of a new detachable axial mechanical property testing device for combined disc springs.

[0025] Figure 6 It is a schematic diagram of an installation state of a new detachable axial mechanical property testing device for combined disc springs.

[0026] Reference numerals

[0027] Upper seat plate (1); Upper seat plate bolt hole (2); Upper seat plate screw rod (3); Spoke type force sensor (4); Spoke type force sensor bolt hole (5); Spoke type force sensor central bolt hole (6); Pre-tightening bolt (7); Force transmission flange (8); Force transmission flange bolt hole (9); Force transmission flange central round hole (10); Force transmission flange central round hole chamfer (11); Force transmission lead screw (12); Force transmission lead screw bolt (13); Constraint steel rod (14); Constraint steel rod upper thread (15); Constraint steel rod lower thread (16); Measuring frame support arm (17); Measuring frame fixing bolt (18); Displacement sensor fixing bolt (19); Measuring frame adjustment bolt (20); Displacement sensor (21); Lower seat plate (23); Lower seat plate central bolt hole (24); Lower seat plate bolt hole (25); Test combined disc spring one (26); Test combined disc spring two (27); Detachable combined disc spring testing device (28); Hydraulic jack (29); Loading frame (30). Detailed implementation manners

[0028] The following clearly and completely describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.

[0029] Many specific details are set forth in the following description in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0030] Such as Figure 1 And Figure 2As shown in the figure, this embodiment mainly consists of an upper seat plate (1), a spoke-type force sensor (4), a force transmission screw (12), a pre-tightening bolt (7), a force transmission flange (8), a constraint steel rod (14), a displacement sensor (21), a lower seat plate (23), a measuring frame support arm (17), a test combination disc spring one (26), and a test combination disc spring two (27).

[0031] The upper seat plate (1) is provided with bolt connection holes (2) at the center and circumferential parts respectively. The upper seat plate screw rod (3) is a screw rod and is installed at the central position of the upper seat plate (1).

[0032] The upper seat plate (1) is connected to the spoke-type force sensor (4) by using the upper seat plate screw rod (3).

[0033] The force transmission flange (8) is provided with a number of bolt holes (9) along the circumference, a circular hole (10) at the center, and an arc-shaped chamfer (11) is provided at the junction of the upper and lower surfaces of the circular hole (10) in the center of the force transmission flange. The diameter of the circular hole (10) in the center of the force transmission flange is larger than the diameter of the constraint steel rod (14) and smaller than the outer diameter of the test combination disc spring one (26) and the test combination disc spring two (27), ensuring that the force transmission flange (8) can slide freely up and down on the constraint steel rod (14) and can conduct the force to the test combination disc spring one (26) and the test combination disc spring two (27).

[0034] The spoke-type force sensor (4) is connected to the force transmission flange (8) by using the force transmission screw (12) and the force transmission screw bolt (13).

[0035] The lower seat plate (23) is provided with a number of lower seat plate bolt holes (25) along the circumference and a central bolt hole (24) at the central position. Threads (15) and lower threads (16) are provided at both the upper and lower ends of the constraint steel rod (14).

[0036] The lower thread (16) of the constraint steel rod (14) is connected to the central bolt hole (24) of the lower seat plate (23). The test combination disc spring two (27) is inserted into the constraint steel rod (14) from one side of the upper thread (15) of the constraint steel rod according to the design, so that the upper edge of the test combination disc spring two (27) is in close contact with the lower edge of the chamfer (11) of the circular hole (10) in the center of the force transmission flange.

[0037] One end of the upper thread (15) of the constraint steel rod (14) is passed through the circular hole (10) in the center of the force transmission flange. The test combination disc spring one (26) is inserted into the smooth part of the constraint steel rod (14) from one side of the upper thread (15) of the constraint steel rod according to the design, so that the lower edge of the test combination disc spring one (26) is in close contact with the upper edge of the chamfer (11) of the circular hole (10) in the center of the force transmission flange. A pre-tightening bolt (7) is installed on the upper thread (15) of the constraint steel rod, and a pre-tightening force is applied to the bolt (7) by using a torque wrench to apply a pre-pressure to the test combination disc spring one (26) and the test combination disc spring two (27).

[0038] Install the adjustment bolt (20) in the bolt hole (25) of the lower seat plate (23). Use the measuring frame fixing bolt (18) to install the measuring frame arm (17) on the bolt hole (5) of the spoke-type force sensor. Clamp the displacement sensor (21) on the measuring frame arm (17) with the displacement sensor fixing bolt (19), and adjust the displacement sensor (21) so that its test contact head abuts against the adjustment bolt (20) and can freely retract and pop out during the test.

[0039] Fix the lower seat plate (23) on the loading frame (30). Connect the hydraulic jack (29) to the upper seat plate (1). Apply force to the upper seat plate (1) through the hydraulic jack (29). Connect the spoke-type force sensor (4) and the displacement sensor (21) to the computer acquisition system respectively, and then the force and displacement data of the to-be-tested combined disc spring one (26) and the to-be-tested combined disc spring two (27) can be acquired. Figure 3 It is the initial state sectional view of the novel detachable axial mechanical property test device for the combined disc spring. Figure 4 It is the tensile state sectional view of the novel detachable axial mechanical property test device for the combined disc spring. Figure 5 It is the compression state sectional view of the novel detachable axial mechanical property test device for the combined disc spring. Figure 6 It is a schematic diagram of an installation state of the novel detachable axial mechanical property test device for the combined disc spring.

[0040] The utility model can simultaneously test the mechanical property parameters of two groups of combined disc springs, effectively improving the test speed.

[0041] The above is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the technical field, within the technical scope disclosed by the utility model, according to the technical solution and the inventive concept of the utility model, makes equivalent substitutions or changes, and all should be within the protection scope of the utility model.

Claims

1. A novel detachable axial mechanical property testing device for a combined disc spring. The device mainly consists of an upper seat plate (1), a spoke-type force sensor (4), a force transmission lead screw (12), a pre-tightening bolt (7), a force transmission flange (8), a constraint steel rod (14), a displacement sensor (21), a lower seat plate (23), a measuring frame support arm (17), a to-be-tested combined disc spring one (26), and a to-be-tested combined disc spring two (27), and is characterized in that The force - transmitting flange (8) has a circular hole (10) in the center. Adjusting bolts (20) are installed at the lower seat - plate bolt holes (25). The upper seat - plate (1) is connected to the spoke - type force sensor (4), and the lower seat - plate (23) is connected to the lower thread (16) of the restraint steel rod (14) respectively. The spoke - type force sensor (4) and the force - transmitting flange (8) are connected by a force - transmitting lead screw (12) and a force - transmitting lead - screw bolt (13). The to - be - measured combined disc spring two (27) is inserted into the restraint steel rod (14) from one side of the upper thread (15) of the restraint steel rod according to the design. The restraint steel rod (14) passes through the circular hole (10) in the center of the force - transmitting flange (8). The to - be - measured combined disc spring one (26) is inserted into the restraint steel rod (14) from one side of the upper thread (15) of the restraint steel rod according to the design. A pre - tightening bolt (7) is installed on the upper thread (15) of the restraint steel rod to apply a pre - pressure to the to - be - measured combined disc spring one (26) and the to - be - measured combined disc spring two (27). The upper end of the measuring - frame support arm (17) is connected to the spoke - type force sensor (4), and the displacement sensor (21) is clamped on the lower side and abuts against the adjusting bolt (20) on the lower seat - plate (23), forming a new detachable axial mechanical - property testing device for the combined disc spring.

2. The novel detachable axial mechanical property testing device for a combined disc spring according to claim 1, characterized in that The spoke - type force sensor (4) and the force - transmitting flange (8) are connected by a force - transmitting lead screw (12) and a force - transmitting lead - screw bolt (13).

3. The novel detachable axial mechanical property testing device for a combined disc spring according to claim 1, characterized in that An arc - shaped chamfer (11) is provided at the junction of the upper and lower surfaces of the circular hole (10) in the center of the force - transmitting flange and the force - transmitting flange (8), so that the upper edge of the to - be - measured combined disc spring two (27) is in close contact with the lower edge of the chamfer (11) of the circular hole (10) in the center of the force - transmitting flange, and the lower edge of the to - be - measured combined disc spring one (26) is in close contact with the upper edge of the chamfer (11) of the circular hole (10) in the center of the force - transmitting flange.

4. The novel detachable axial mechanical property testing device for a combined disc spring according to claim 1, characterized in that The diameter of the circular hole (10) in the center of the force - transmitting flange is larger than the diameter of the restraint steel rod (14) and smaller than the outer - circle diameters of the to - be - measured combined disc spring one (26) and the to - be - measured combined disc spring two (27), ensuring that the force - transmitting flange (8) can slide freely up and down on the restraint steel rod (14) and can conduct the force to the to - be - measured combined disc spring one (26) and the to - be - measured combined disc spring two (27).

5. The novel detachable axial mechanical property testing device for a combined disc spring according to claim 1, characterized in that Both the upper and lower ends of the restraint steel rod (14) are provided with upper threads (15) and lower threads (16).

6. The novel detachable axial mechanical property testing device for a combined disc spring according to claim 1, characterized in that The measuring - frame support arm (17) is installed on the bolt hole (5) of the spoke - type force sensor by using the measuring - frame fixing bolt (18).

7. The novel detachable axial mechanical property testing device for a combined disc spring according to claim 1, characterized in that The displacement sensor (21) is clamped on the measuring - frame support arm (17) by using the displacement - sensor fixing bolt (19), and the displacement sensor (21) is adjusted so that its test contact head abuts against the adjusting bolt (20).

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